ASTROSAT CZTI

Data Quality Report

Orbit 39784

Creation date: 2024-06-27T22:08:58.875596
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_086T01_9000005496_39784cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39784cztM0_level2_quad_clean.evt
Size (bytes)407,304,000103,867,200
Size388.4 MB 99.1 MB
Events in quadrant A3,231,520726,590
Events in quadrant B3,171,130723,980
Events in quadrant C4,894,072673,342
Events in quadrant D3,339,233624,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132113
B0132462
C0183532
D0137252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675280.493392%
B56751192.096916%
C56753145.533040%
D56751612.837004%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7107 5675 6 6 0.08% 0.11%
B 7107 5675 54 54 0.76% 0.95%
C 7107 5675 281 281 3.95% 4.95%
D 7107 5675 156 156 2.20% 2.75%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 496219 3636.13 651 640 136.3
A 2 79 164635 1203.25 651 640 136.3
A 9 143 19974 141.86 651 640 136.3
B 5 172 205975 1596.75 645 631 128.6
B 5 255 166534 1290.06 645 631 128.6
B 5 32 120932 935.46 645 631 128.6
C 9 187 1394140 9269.77 625 632 150.3
C 15 208 551667 3665.55 625 632 150.3
C 14 254 249844 1657.79 625 632 150.3
D 13 249 345812 2191.55 626 612 157.5
D 12 233 206522 1307.25 626 612 157.5
D 12 227 103426 652.73 626 612 157.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter